it will limit the HF respnose of the driver. if you add mass and stifen the driver it might make snese to use resin. i would suggest a few thin layers of resin but youd have to be able to measure the added weight of teh resin. the way i would do this is weigh the resin before applying then weight teh remaining resin and substract.

Experimented with banana paper. This is an "environmentally friendly" gift wrap paper that you can get here. It consists of very thin , long fibred paper and has occasional pieces of banana pulp (maybe 30% of area).

I soaked two pieces in cheap wallpaper glue (with some polymer filling) for 12 hous and deposited them on a piece of newpaper, on top of each other and giving the second piece a bit of wrinkling. The stuff took about a day to dry, but it became very hard and stiff and weighs close to nothing (after all, the glue reduces to the original weight of the powder, which is 20-40 g per liter).

There are some heavily polymer filled and somewhat humidity resistent wallpaper glues, and you don't need to use many more g per liter. Might be a way to optimize stiffness and damping.

Next paper to try might be the local #1 Kleenex which is called Tempo. They advertise a new composition that makes the tissue stay together if you inadvertently forget to remove them before the laundry.